CS7331P Miniature Bottom Port Analog MEMS Microphone Features Description High acoustic overload point (AOP, 124-dB SPL) The CS7331P is a low-profile analog MEMS microphone. It offers miniature dimensions and low-current consumption, High signal-to-noise ratio (63-dB SNR) making it ideal for always-on, always-listening use in space-constrained applications. Low variation in sensitivity (1 dB) The CS7331P incorporates Cirrus Logic proprietary Low current consumption (55 A) CMOS/MEMS membrane technology, offering high Analog output reliability and high performance. The CS7331P is designed to withstand the high temperatures associated with Bottom-port LGA package automated flow solder assembly processes. 1.6- to 3.6-V supply The CS7331P is ideally suited to the Cirrus Logic SoundClear suite of audio processing algorithms, including speech recognition, voice trigger, and noise cancelation. The CS7331P is available in a 2.5 1.6 0.9-mm, bottom-port LGA package, with a 0.25-mm port diameter. It is ideal for portable applications such as noise-canceling earbuds, smartphones, wearables, and cameras. VDD GND MEMS CMOS ASIC Transducer Biasing High Performance Amp OUTPUT DS1165F1 Copyright Cirrus Logic, Inc. 20162017 (All Rights Reserved) MAR 17 CS7331P Table of Contents 1 Pin Descriptions ........................................................................................................................................................... 3 1.1 LGA Pinout ............................................................................................................................................................ 3 1.2 Pin Descriptions ..................................................................................................................................................... 3 2 Typical Connection Diagram ....................................................................................................................................... 4 3 Characteristics and Specifications ............................................................................................................................. 4 Table 3-1. Parameter Definitions . 4 Table 3-2. Recommended Operating Conditions . 4 Table 3-3. Absolute Maximum Ratings . 5 Table 3-4. Acoustic and Electrical Characteristics 5 4 Typical Performance .................................................................................................................................................... 6 5 Applications Information ............................................................................................................................................. 7 5.1 Important Assembly Guidelines ............................................................................................................................. 7 5.2 PCB Land Pattern and Paste Stencil ..................................................................................................................... 8 6 Package Dimensions .................................................................................................................................................... 9 7 Ordering Information .................................................................................................................................................... 9 8 References .................................................................................................................................................................... 9 9 Revision History ........................................................................................................................................................... 9 2 DS1165F1